howard



1920 2 shears-snee: 1

. irixivviwiiixw PHONOGRAPH A. L. HOWARD July 2?. 1924.

Original Filed April 22 im 2 W M. H 3J L .w M .vwvv ,la Mn. MM. A .w *m J Vx l n NN Reissued July 22, 1924.

Raises-f .I 4UNITI-:D STATES PATENT- oFFrcr..

. y l ALBEN L. HOWARD, or ANN mon, Emmen.

PHONQGRAPH.

original no. 1,369,280, ma February 22, 1921', serial No. 375,686, siavs'pru 22; 1920. 'Aspiration m' reissue tiled November 4,

To all/whom it may comm:

Be lit known that I, ALBEN L. HOWARD, a citizen of the United States, residin in the city `of Ann Arbor, county'of VVs tenaw, and State of,Michigan, have invented certain new and useful 'Improvements in Phonographs, of which the following is a sliecification.

y invention relates toimprovements 1n phonographs and relates more particularly toa startlng and stoppingdevice for phonographs using the disc type record. Y j mong'its salient objects are to provide a device or attachment which 'automatically i as - meshes with the rack shown in er for t e drivlng motor.

startsl the record disc to rotating when the reproduction horn is in position for the needle to be placed upon the record, and automatically stops the record disc when the record has been completed; to provide a device tha` is adapted to be mounted lon any type of isc machine, one that is posltive in its operation, simple in construction, besides having the working parts conveniently positioned for adjustment; to provide a device that may be permanently adjusted due to the fact that there is practically no wear upon ,the actuating mechanism; to providean attachment that is quickly detachable 'from the machine by removing a single plate upon which the exposed mechanism is mounted and in general to provide a device of the .character hereafter referred to. 1 Inthe drawings: I vFig. 1 is a xagmentaryiedge view of the. :mechanism of a disc type phonograph with .p arts' broken away and parts shown in secun. a {Figf2 is a plan view of substantially that of the mechanism shown in Fig.- 1. ',-Fi 3 isa detail view taken on line' 3-3 ofv 1g. V2, looking in the direction of the arrow.

Fig. 4 is pinion which ig. 2. Referring to the drawinvs, only that part of the mechanism of al zdisc type phonoaph is shown as is kparticularly related to t e automatic starting and stopping device. Two lar springs shown at, 1 furnish pow- These springs together with the large helical gear 2 are mounted upon a shaft 3, which is carried Vby suitable bearings 4. These bearings are .partpf a ramer, which is ixedly attached a detail View of the 1921.r serial 151'.V 512323.

to 'the upper table portion 6. i The disc whichV carris the record 8 is rotated'by means of a verticalshaft 9 u n which lis cut a worm 10, which'meshes wlth the helical a ear 2 of asimilar charis also rotatably mounted on the top thereof a 'pinion-18. The top ofpthe'verticaly shaft 17 is slotted asshown at 19 and in this vslot is placed a light iiat friction 'spring which is held iny place by means of the nut 20."

This spring issli htly bowed and-either end slightly twisted ongitudinally. in opposite directions so'that with the settin nu-t, the ends of the."spring will `riction'ally contactr the Vtop of the pinion 18 when it'ls rotated ina counterclockwise direction" and turn freel when rotating in a clockwise Vhe friction caused by this spring is .hardly perceptible but it is sufficient to up ofthe a posi-tively actuate the mechanism'. The pin- I yion 18 meshes with a rack 21, which lisan' integral part of the member sliding Vin 'the central slot 22 ofthe7 arc 23. The arc upon which thek rack is out is centeredat 24, as is the .reproducing arm 25, whiclris connected to the sounding box 26 by, means of a curved'tube connection 27. This curved tubel may be rotated so as to raiseand lower the sounding box and vneedle 28 rorm contact kwith the record. The arc 23 o n'theV other hand, in which is slidablymounted the rack'21 is'cente'red at 29.' This are is pivoted at 30 anda rotative tension in the direction o f the arrow is constantly held upon the are by means ofthe coilspri'ng 31.

Adjustably fixed by means of the set screws 32 to the top vof the'rack member 21, and sliding withit in theslot 22, is a plate member 33. In this plateJnember is cut an L.shaped slot. 34 and into the shorter portionof this slot is screwed a set screw 35, which is adapted to regulate the'length of the slotted portion or, more properly, thz: width of the shoulder upon which the'vertical pin 36 may rest. This yvertical pin is l Sound arm and is held iii rivt@ vtoggle sound tubhgashovgll n Fig. 1.: rtf* 1 that niiition w ic is upon t'li'e hlduider of the L-slt is squared so that its dropping 5 from the shoulder itotielongerlporton of the slot is instantaneous.

The mechanism is simply mounted'io'n tti egeuein the movement ofthse two Bewmefsietiopmy A e Kwiki@ 'riding gtinuousl groove, vip the ,L g. "lis new, beweer, which fis' ..menim .the-m@ r4' @www to rotate the yrack causes it to across reoord,

thilet 34 as is Shown d shoulder of the L-slot, thereby permitting the' 'lf ring 31 to ti'ei'eifct r"and throw tl'e'sfopl in ieeord are allowedltorotate after the com- `pletion of the selection may Ibe regulated by Tfriting the size of the shoulder upon chtact'vth the'dfge'of the disc. The length of time which the disc and ing its rotti "perfiodf'ofan autmtally actuated arca' apte'd tofitictionally tiontact the dise, operative "eone'etions between the reproducing meehanismland :the arc 'fr automatieally tar-ting alud "sikppingJl the rotation' of thediso.

.zI'nan automatie starting and `stopping dyiice `for phonographs, the coi'r'binaltion 'adapted to mo'e i 'horizontally b'r'ss i silbstntially Ione half of "the disc during the rotating period, an automatically atuated are2fecfceht'r icallyy positioned twith ref? erenee I -to "sadf 4Ifeprodueingineohhnsm and adapted to fietional'ly' contact the *ldisc ing mehanisrn and the are .for autorntibirlstarting and stopping the'rotationfbf the 1sc.

In'a`f`startigng and stoppingfdevie'ei'for phonographs, E'the combination f' a Y 'rostntially'the rdiusof tlieldise duringlthe in, moving timed relation 'with the/"reproducing mechanism, operati'veconnetions between the sliding member of the arc and the reproducin mechanism for automaticall starting-an stopping the rotation of the 5. In an automatic starting and stopping device for vphonographs, the combination with a rotating disc, of a reproducing mechanism adapted to progress across the face of the disc during its rotating period, an automatically actuated mechanism for controlling the starting'and stopping of the disc, o rative connections between the reroducing mechanism and said automaticaly actuated mechanism for automatically controllingthe starting and stopping of the rotation of the disc with the lateral movement of the reproducing mechanism.

6. In a startmg and stopping device for honographs, the combination with a roting disc, of a reproducing mechanism adapted to move across the face of the disc, automatically actuated mechanism adapted to control the starting andistopping of the disc and moving in timed relation with the reproducing mechanism, and operative connections between said automatically actuated mechanism and the reproducing mecha-` nism for automatically starting and stopping the rotation of the disc with the lateral movement of thereproducing mechanism.

7. In an automatic starting and stopping device, the combination with a rotating disc and reproducing mechanism adapted to progress horizontally across substantially one-half of the disc during the rotating period, an automatically actuated member eccentrically positioned with reference to the pivotal mounting of the reproducing mechanism, operative connections between, 

